On Mon, 4 Mar 2013 23:22:04 -0500, Luke Campagnola <lcamp...@email.unc.edu> wrote: > Howdy, > I have found that somewhere between 4.8.3 and 4.9.6, calling > QTreeWidgetItem.addChild(item) no longer creates a reference to the > specified item (or, at least that is my best guess as to what's going on). > I noticed this because I often assign custom attributes to these items and > found that the attributes go missing under 4.9.6 if I don't keep an > explicit reference to the item. > > Here's an example from 4.8.3: > >>>> from PyQt4.QtGui import * >>>> app = QApplication([]) >>>> tree = QTreeWidget() >>>> item = QTreeWidgetItem(["Item"]) >>>> item.attr = "test" >>>> tree.invisibleRootItem().addChild(item) >>>> del item >>>> import gc >>>> gc.collect() > 0 >>>> tree.topLevelItem(0).attr > 'test' > > ..and the same under 4.9.6: > >>>> from PyQt4.QtGui import * >>>> app = QApplication([]) >>>> tree = QTreeWidget() >>>> item = QTreeWidgetItem(["Item"]) >>>> item.attr = "test" >>>> tree.invisibleRootItem().addChild(item) >>>> del item >>>> import gc >>>> gc.collect() > 0 >>>> tree.topLevelItem(0).attr > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > AttributeError: 'QTreeWidgetItem' object has no attribute 'attr' > > Questions are: > 1) Is this a bug, or was the change deliberate? > 2) Does this apply only to QTreeWidgetItem, or are there similar changes > elsewhere I should watch out for?
I think it's an old bug (specifically with invisibleRootItem()) exposed by a recent SIP fix. Fixed in tonight's PyQt snapshot. Thanks, Phil _______________________________________________ PyQt mailing list PyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
